package myCard;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class Card {
    private int rank;//数字
    private String suit;//花色

    public Card(int rank, String suit) {
        this.rank = rank;
        this.suit = suit;
    }

    @Override
    public String toString() {
        return "[" +
                this.suit + "  " + this.rank +
                "]";
    }

}

class useCard{

    private static final String[] suits = {"♥","♦","♣","♠"};

    //没有大小王:1 2 3 ... 10 11 12 13
    public static List<Card> buyCard(){
        ArrayList<Card> cards = new ArrayList<>();
        for (int i = 0; i < 4; i++) {
            for (int j = 1; j <= 13 ; j++) {
                /*String suit = suits[i];
                int rank = j;
                Card card = new Card(rank,suit);
                cards.add(card);*/
                cards.add(new Card(j,suits[i])); //简化
            }
        }
        return cards;
    }

    private static void swap (List<Card> cards , int i ,int j ){
        //Card tmp = cards[i]; 但是因为cards是集合不是数组,所以改一下
        Card tmp = cards.get(i);
        //cards[i] = cards[j];
        cards.set(i,cards.get(j));
        //cards[j] = tmp;
        cards.set(j,tmp);
    }

    //洗牌
    public static void shuffle(List<Card> cards){
        int size = cards.size();
        for (int i = size - 1; i > 0 ; i--) {
            Random random = new Random();
            int rand = random.nextInt(i);
            swap(cards,i,rand);
        }
    }

    public static void main(String[] args) {
        List<Card> cards = buyCard();
        System.out.println("买牌:"+cards);
        shuffle(cards);
        System.out.println("洗牌:"+cards);
        System.out.println("揭牌:3个人每个人轮流揭五张牌");

        ArrayList<List<Card>> hand = new ArrayList<>();
        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();
        List<Card> hand3 = new ArrayList<>();
        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);

        //轮流揭五张牌,每一轮每个人揭一张牌
        for (int i = 0; i < 5 ; i++) {
            for (int j = 0; j < 3; j++) {
                Card card = cards.remove(0);
                hand.get(j).add(card);
            }
        }
        System.out.println("第一个人的牌:"+hand1);
        System.out.println("第二个人的牌:"+hand2);
        System.out.println("第三个人的牌:"+hand3);
        System.out.println("剩下的牌:"+cards);

    }
}
